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The first step would be to rearrange the first equation to make y the subject:
3x+y=-4 ----> y=-4-3x
Next we want to substitute this value of y into the second equation
3x-4y=6 ----->...

This is a common class of question concerning projectile motion and the independence of orthogonal forces.
First the student should sketch the problem an label the forces, In doing this they will see...

When these atoms react together Calcium chloride, CaCl₂, is formed. Calcium atoms have two electrons in their outer shell, which can be determined from the fact they are in group 2 of the perio...

Shareholders are individuals (or groups of individuals, companies, institutions, etc.), who own a part of a business through the ownership of its shares. A stakeholder is an individual (or a group), that ...

The perfect tense is used in French to described completed actions in the past, such as 'I ate an apple' or 'I have done my homework' .e.g. Je mange une pomme = I eat an apple (present tense) // J'ai mang...